Dr. Amy Winslow tells the story: in foggy, nighttime San Francisco a jogging SFPD captain is savagely attacked by a Bengal tiger which then vanishes. In her ER, Amy labors unsuccessfully to save the captain’s life, then consoles his aggrieved closest friend, Lt. Luis Ortega. Neither suspects their lives will intertwine in a life-or-death mystery.The next day, checking on former patient Mrs. Hudson at her Victorian house isolated in Marin County’s forest, Amy discovers in the cellar...